~x-ai/grok-latest → B (1:7)

A is a small but real correctness fix: moving the zero-ratio early-return before ensure_item/voted_pairs so invalid votes no longer leave ghost index entries. B delivers far more lasting product value—an entire /vote compare flow, bridge-preferring pair selection (pair.rs + components), in-place morph UX, ItemId::from_storage normalization, and substantial tests—not mere churn despite the vague message.